Dutch regulator de Kansspelautoriteit (KSA) has taken action against 37 operators who operated gaming machines without the correct permits.
The KSA issues operating licences for gaming machines, but venues also need a presence permit to confirm that the machines are located in a permitted place.
This means that gaming machines are only licensed if they are in locations predominantly visited by adults.
The regulator conducted inspections of a random sample of 290 catering locations with gaming machines. The 37 infringing operators have been notified by the KSA.
All operators in the investigation, with the exception of one, ceased the violations. The operator who remained in violation will face an order for a penalty.
